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Math Help - tens and ones

  1. #1
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    tens and ones

    My tens digit is 3 more than 5.My tens digit is double the number of my ones digit.What number am I?
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by mredhi390 View Post
    My tens digit is 3 more than 5.
    So the tens digit is 5+3=8

    My tens digit is double the number of my ones digit.What number am I?
    So the ones digit is 8/2=4.

    The number is 84

    RonL
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  3. #3
    Forum Admin topsquark's Avatar
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    Quote Originally Posted by mredhi390 View Post
    My tens digit is 3 more than 5.My tens digit is double the number of my ones digit.What number am I?
    I'm assuming a two digit number?

    Let it be ab = a \cdot 10 + b.

    We know that a is 3 more than 5, so a = 8.

    a is double b, so a = 2b. Since a = 8, thus b = 4.

    So the number is 84.

    -Dan
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  4. #4
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    my ones digit is 2 less than 8. my ones digit is 4 more than my tens digit. what number am i
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    Forum Admin topsquark's Avatar
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    Quote Originally Posted by erica View Post
    my ones digit is 2 less than 8. my ones digit is 4 more than my tens digit. what number am i
    Well, 8 - 2 = 6, so that's the one's digit. 6 - 4 = 2, so that's the ten's digit. Your number is 26.

    -Dan
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  6. #6
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    Wink i know that one

    Quote Originally Posted by mredhi390 View Post
    My tens digit is 3 more than 5.My tens digit is double the number of my ones digit.What number am I?
    answer 84
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